Thin-walled shaft sleeve dismounting device and method

Abstract

The invention discloses a thin-walled shaft sleeve dismounting device and method. The thin-walled shaft sleeve dismounting device comprises a base. The base is used for holding a containing part and athin-walled shaft sleeve which is in interference fit with the interior of the containing part. The thin-walled shaft sleeve dismounting device is structurally characterized in that the dismounting device further comprises a cooling device and a separating device; the cooling device is used for cooling the thin-walled shaft sleeve so that the thin-walled shaft sleeve can radially contract; and the separating device is used for dismounting the radially contracted thin-walled shaft sleeve from the containing part. The thin-walled shaft sleeve is dismounted through cooling, less-destructive or nondestructive dismounting of the thin-walled shaft sleeve is achieved, the dismounting efficiency and quality are improved, and the remanufacturing cost is reduced.

Description

technical field [0001] The invention relates to a dismantling device and method for a thin-walled shaft sleeve, belonging to the field of remanufacturing and dismantling. Background technique [0002] At present, my country's construction machinery products have entered the peak period of decommissioning, and it is estimated that by 2020, the number of decommissioned construction machinery will reach about 1.2 million. The thin-walled bushing is one of the key components in the articulated pair of construction machinery. It is partially loaded in the circumferential direction, the frequency of load changes is high, and it is easy to be damaged. It needs to be disassembled frequently for replacement or remanufacturing. [0003] At present, this kind of thin-walled bushing is basically disassembled mechanically, relying on a large external mechanical force to overcome the friction force generated by the contact pressure between the bushing and the containing surface. Sleeves ...

AI Technical Summary

Problems solved by technology

[0003] At present, this kind of thin-walled bushing is basically disassembled mechanically, relying on the application of a large mechanical force to overcome the friction force generated by the contact pressure between the bushing and the containing surface. Sleeves and containment parts are more damaged, especially in the case of damaged and deformed shaft sleeves

Therefore, after dismantling, the shaft sleeve is generally discarded, and the diameter of the bore hole of the containing part is enlarged. Then, according to the size of the bore hole, a new shaft sleeve (interference fit is consistent with the original design level) and a new pin shaft (clearance fit is consistent with the original design level) are produced. ) to meet the production requirements; this is essentially a quasi-destructive disassembly of the shaft sleeve and the containing parts, which is not energy-saving and environmentally friendly, with high economic costs and poor social benefits

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